Dual Fuel Pumps...yes? no?
Posted by 240tshead
240tshead Taylor Shead Mega Moderator Location: UTA, Texas Join Date: 02/28/2011 Age: Settling Down Posts: 102 Rally Car: scrap heap |
Okay tell me if I'm right or if my mind is making thngs up. It's a good idea to run dual fuel pumps, right? Not to be running at the same time...but for backup if #1 goes out.
I got two Walbro 255s today. Also curious how I would run the lines? Ys and check valves maybe? |
NoCoast Grant Hughes Professional Moderator Location: Whitefish, MT Join Date: 01/11/2006 Age: Midlife Crisis Posts: 6,818 Rally Car: BMW |
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Pete Pete Remner Godlike Moderator Location: Cleveland, Ohio Join Date: 01/11/2006 Age: Midlife Crisis Posts: 2,022 |
Is it best to run them each on separate switches/fuses/relays or just Y in the power from a relay so that NC goes to one pump and NO goes to the other pump, and powering the relay switches the pumps?
I want to put two fuel pumps in the rallycross car. Killed a Bosch pump, was still able to drive it home tho. (Fortunately it really started acting up AFTER I crossed the Mississippi and got to flatter ground) I really like the idea of flipping a switch and bringing the other pump online instead of trying to revive the dying one. Pete Remner Cleveland, Ohio 1984 RX-7 (rallycross thing) 1978 Silence is golden, but duct tape is silver. |
beebe Chris Beebe Infallible Moderator Location: Medford, Oregon Join Date: 01/25/2006 Posts: 115 Rally Car: Sold them all! |
This is my little story with a single pump unit. I was sitting in a time control and was next up to the start line when all the sudden....... motor quit! Fuel pump had something in it and quit turning. Had to push the car aside and mess with it for a couple of minutes. Ended up reversing the leads to clear the pump and get the car back up and running! Needless to say, we went from a good placing to back of the pack because of this! Good choice on going with the two pumps! You just never know when it may choose to quit on you!
Edited 1 time(s). Last edit at 10/19/2012 07:44PM by beebe. |
john vanlandingham John Vanlandingham Godlike Moderator Location: Ford Asylum, Sleezattle, WA Join Date: 12/20/2005 Age: Fossilized Posts: 14,152 Rally Car: Saab 96 V4 |
If you're going to 2 pumps, then of course separate power, relays, switches. I use a on/off/on for each....middle is off so i can have IGN on and fawk with things, up----kinda like a light switch is up---for ON----even with key off... and down is on and off with the ignition like the law says.. make it easy to remember: "Down with the law".... On SS I run both. each transit I'll switch one or the other off.... Anything less than that is madness I tell you! MADNESS! John Vanlandingham Sleezattle, WA, USA Vive le Prole-le-ralliat www.rallyrace.net/jvab CALL +1 206 431-9696 Remember! Pacific Standard Time is 3 hours behind Eastern Standard Time. |
Tom B Tom B Infallible Moderator Location: Douche Canoe, WA Join Date: 02/27/2006 Age: Midlife Crisis Posts: 780 Rally Car: VW Golf |
yes. yes. yes. yes.
-Tom DemonRallyTeam | Fine Tuning | CTS Turbo & RP Turbos | RalleyTuned | JRM | Meister Autowerks Spitfire EFI | Product Apparel | JVAB Imports | NLS | AP Tuning | USRT Add us on Facebook | Next Event: 2013 Olympus Rally June 22-23 Olympia, WA |
240tshead Taylor Shead Mega Moderator Location: UTA, Texas Join Date: 02/28/2011 Age: Settling Down Posts: 102 Rally Car: scrap heap |
Your reply is confusing to me. Can you plz explain that one again? lol Thanks all for the replies! |
john vanlandingham John Vanlandingham Godlike Moderator Location: Ford Asylum, Sleezattle, WA Join Date: 12/20/2005 Age: Fossilized Posts: 14,152 Rally Car: Saab 96 V4 |
It's perfectly clear.
Break it up into shorter lengths, hack the spelling.. maybe copy and paste it to facebook and it'll make more sense.
John Vanlandingham Sleezattle, WA, USA Vive le Prole-le-ralliat www.rallyrace.net/jvab CALL +1 206 431-9696 Remember! Pacific Standard Time is 3 hours behind Eastern Standard Time. |
240tshead Taylor Shead Mega Moderator Location: UTA, Texas Join Date: 02/28/2011 Age: Settling Down Posts: 102 Rally Car: scrap heap |
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john vanlandingham John Vanlandingham Godlike Moderator Location: Ford Asylum, Sleezattle, WA Join Date: 12/20/2005 Age: Fossilized Posts: 14,152 Rally Car: Saab 96 V4 |
No. Switch up---pump ON period Switch middle----pump OFF period* Switch down-----pump on and off with the key like a normal car Doubles as anti-theft device if you don't lable the pumps Fuel Pump 1, so i mark them "Soppa" which is for soup in Swedish and soup is slang for fuel.. Juice, HC, Kassa (remember g and k is basically same thing if you just say it aloud) something you understand. ¿Claro nino? John Vanlandingham Sleezattle, WA, USA Vive le Prole-le-ralliat www.rallyrace.net/jvab CALL +1 206 431-9696 Remember! Pacific Standard Time is 3 hours behind Eastern Standard Time. |
Pete Pete Remner Godlike Moderator Location: Cleveland, Ohio Join Date: 01/11/2006 Age: Midlife Crisis Posts: 2,022 |
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240tshead Taylor Shead Mega Moderator Location: UTA, Texas Join Date: 02/28/2011 Age: Settling Down Posts: 102 Rally Car: scrap heap |
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john vanlandingham John Vanlandingham Godlike Moderator Location: Ford Asylum, Sleezattle, WA Join Date: 12/20/2005 Age: Fossilized Posts: 14,152 Rally Car: Saab 96 V4 |
Taylor, don't think too hard, just follow colors.. If you go cross eyed like I started doing after dinging my head far too many times---and then eyes getting old---get some colored pens and color the critical parts of the diagram---say you're looking at the fuel pump circuit. color HOT to the fuse box, then to the relay, and the wire from ECU that powers the relay, and the ground---just what you need.. Simple rule---juice gotta get there. and juice gotta get back. So a test lamp which I call "Pokey Light" to poke at connections answers "Is there juice there?" then a visual on grounds.. Some good Emery paper for cleaning grounds is nice. Pokey light and 180 Emery. That takes care of 98% of electrical problems... Eventually the wiring diagram will be very pretty. John Vanlandingham Sleezattle, WA, USA Vive le Prole-le-ralliat www.rallyrace.net/jvab CALL +1 206 431-9696 Remember! Pacific Standard Time is 3 hours behind Eastern Standard Time. |
EricW Eric Wages Godlike Moderator Location: Goose Creek, SC Join Date: 12/09/2008 Age: Midlife Crisis Posts: 280 Rally Car: 2002 WRX |
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john vanlandingham John Vanlandingham Godlike Moderator Location: Ford Asylum, Sleezattle, WA Join Date: 12/20/2005 Age: Fossilized Posts: 14,152 Rally Car: Saab 96 V4 |
Maybe. I'd check a pump and see if it really does anything. I appreciate the concern becasue few things are more frustrating than filling up on a transit at Big Freds Live Bait and Hunting Licence Emporium in the outskirts of Bumfawk, Egypt and next stage start having the motor go bwa bwa bwa bwaaaaaaaaaaaaaaaaa, (cruch) bwauuuuuuuuuup uh uuuuuh clunk. John Vanlandingham Sleezattle, WA, USA Vive le Prole-le-ralliat www.rallyrace.net/jvab CALL +1 206 431-9696 Remember! Pacific Standard Time is 3 hours behind Eastern Standard Time. |
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